Love how you just totally ignored my post. If the presented information is legit, the turret cheek KE resistance is given to be around 700-800 mm RHAe not 1000 mm RHAe from the front. I see a lot of US/British/German (or insert any other nation) fanboys on the internet that just ignore data if it contradicts their views on a particular vehicle even if there are multiple sources that can not be easily dismissed.
Also, the protection scheme of the Abrams and pretty much any other modern main battle tank is focused on the protection in the frontal 60 degree arc of the vehicle primarily.
The turret roof and the side hull of the Abrams are not any thicker than that of the Type 99A for the most part.
Anyway, the M1A2 SEP (V1) tank has a weight of 63,1 metric tons. Some US documents on weight of the SEP V2 put it up to 65 metric tons fully equipped. It seems that a lot of people are confusing US units with metric units.
Here are some more weights of tanks in metric units:
Challenger 2 = 62,5 t (with ROMOR ERA = 65 t)
Leclerc Serie 2 = 56,5 t
Leclerc XXI = 57,3 t
Leopard 2A4 = 55-56.5 t
Leopard 2A5 = 59,9 t
Leopard 2A6M = 62 t
Leopard 2A7+ = 67,5 t
K1A1 = 53,1 - 54,5 t
K2 = 55 t
Type 99A = 58 t
Merkava 4 = 68-71 t
M1 = 54,5 t
M1A1 = 59,1 t
M1A1 HA = 61,3 t
Type 90 = 50,3 t